Step-by-step explanation:
The answer is (a) rate. Rate refers to the speed or pace at which a person speaks. It can be fast or slow, and can vary depending on the situation, the speaker's mood, or other factors. Articulation refers to the clarity of the sounds and words that a person produces when speaking. Volume refers to the loudness or softness of a person's voice. Pronunciation refers to the way in which a person says words, including the correct placement and sound of specific letters and syllables.